13138712 has 8 divisors (see below), whose sum is σ = 24635100. Its totient is φ = 6569352.

The previous prime is 13138703. The next prime is 13138721. The reversal of 13138712 is 21783131.

It is an interprime number because it is at equal distance from previous prime (13138703) and next prime (13138721).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821162 + ... + 821177.

Almost surely, 2^13138712 is an apocalyptic number.

It is an amenable number.

13138712 is a deficient number, since it is larger than the sum of its proper divisors (11496388).

13138712 is a wasteful number, since it uses less digits than its factorization.

13138712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642345 (or 1642341 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 13138712 is about 3624.7361283271. The cubic root of 13138712 is about 235.9668152133.

The spelling of 13138712 in words is "thirteen million, one hundred thirty-eight thousand, seven hundred twelve".